b12 injection monograph Injections at Olympia Cyanocobalamin 1,000 mcg / mL
Description
The many functions of histamine include: Histamine is produced through the decarboxylation of the amino acid histidine

From a pharmacokinetic perspective , limited evidence exists directly comparing how these two forms behave in the body
[PubMed] [Google Scholar] 25.Neelakantan V HV, Wang HL, McHardy SF, Watowich SJ

Semaglutide, the former, is still in the research phase
